topsoil
🇺🇸
/ˈtɑːpsɔɪl/
🇬🇧
/ˈtɒpsɔɪl/
The uppermost layer of soil that is rich in nutrients and supports plant growth.
To improve the health of his garden, John decided to enrich the topsoil with compost.
为了改善他的花园的健康状况,约翰决定用堆肥来丰富表层土壤。